The protagonist is a young woman, Joan Prats suffering from agnosia, a strange, primary visual disease that is one of the neuropsychological
disorders of perception. Although her eyes and ears are in perfect
condition, her brain is not able to correctly interpret the stimuli it
receives. Joan is the only person to know an industrial secret left
behind by her late father and becomes the victim of a sinister plan to
extract this information. Her captors plan to use her sensory condition
to help extract the information that they so desperately want